mirror of
git://git.savannah.nongnu.org/eliot.git
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293 lines
7.2 KiB
Text
293 lines
7.2 KiB
Text
%{
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/* Eliot */
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/* Copyright (C) 2005 Antoine Fraboulet */
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/* */
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/* This file is part of Eliot. */
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/* */
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/* Eliot is free software; you can redistribute it and/or modify */
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/* it under the terms of the GNU General Public License as published by */
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/* the Free Software Foundation; either version 2 of the License, or */
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/* (at your option) any later version. */
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/* */
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/* Elit is distributed in the hope that it will be useful, */
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/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
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/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
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/* GNU General Public License for more details. */
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/* */
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/* You should have received a copy of the GNU General Public License */
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/* along with this program; if not, write to the Free Software */
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/* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#include <stdio.h>
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#include <malloc.h>
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#include <stdlib.h>
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#include <string.h>
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#include "dic.h"
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#include "dic_internals.h"
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#include "dic.h"
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#include "regexp.h"
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#include "dic_search.h"
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#include "libdic_a-er.h"
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#include "scanner.h"
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/**
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* function prototype for parser generated by bison
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*/
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int regexpparse(yyscan_t scanner, NODE** root,
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struct search_RegE_list_t *list,
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struct regexp_error_report_t *err);
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/**
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* function prototype for error reporting
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*/
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void regexperror(YYLTYPE *llocp, yyscan_t scanner, NODE** root,
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struct search_RegE_list_t *list,
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struct regexp_error_report_t *err,
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char const *msg);
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%}
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%union {
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char c;
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NODE *NODE_TYPE;
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char letters[DIC_LETTERS];
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};
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%defines
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%name-prefix="regexp"
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%pure-parser
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%locations
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%parse-param {yyscan_t yyscanner}
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%parse-param {NODE **root}
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%parse-param {struct search_RegE_list_t *list}
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%parse-param {struct regexp_error_report_t *err}
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%lex-param {yyscan_t yyscanner}
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%token <c> LEX_CHAR
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%token LEX_ALL
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%token LEX_VOWL
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%token LEX_CONS
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%token LEX_USER1
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%token LEX_USER2
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%token LEX_L_SQBRACKET LEX_R_SQBRACKET
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%token LEX_L_BRACKET LEX_R_BRACKET
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%token LEX_HAT
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%token LEX_QMARK
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%token LEX_PLUS
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%token LEX_STAR
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%token LEX_SHARP
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%type <NODE_TYPE> var
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%type <NODE_TYPE> expr
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%type <letters> vardis
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%type <letters> exprdis
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%type <NODE_TYPE> exprdisnode
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%start start
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%%
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start: LEX_L_BRACKET expr LEX_R_BRACKET LEX_SHARP
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{
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NODE* sharp = regexp_createNODE(NODE_VAR,RE_FINAL_TOK,NULL,NULL);
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*root = regexp_createNODE(NODE_AND,'\0',$2,sharp);
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YYACCEPT;
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}
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;
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expr : var
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{
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$$=$1;
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}
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| expr expr
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{
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$$=regexp_createNODE(NODE_AND,'\0',$1,$2);
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}
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| var LEX_QMARK
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{
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NODE* epsilon=regexp_createNODE(NODE_VAR,RE_EPSILON,NULL,NULL);
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$$=regexp_createNODE(NODE_OR,'\0',$1,epsilon);
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}
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| var LEX_PLUS
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{
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$$=regexp_createNODE(NODE_PLUS,'\0',$1,NULL);
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}
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| var LEX_STAR
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{
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$$=regexp_createNODE(NODE_STAR,'\0',$1,NULL);
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}
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/* () */
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| LEX_L_BRACKET expr LEX_R_BRACKET
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{
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$$=$2;
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}
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| LEX_L_BRACKET expr LEX_R_BRACKET LEX_QMARK
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{
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NODE* epsilon=regexp_createNODE(NODE_VAR,RE_EPSILON,NULL,NULL);
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$$=regexp_createNODE(NODE_OR,'\0',$2,epsilon);
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}
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| LEX_L_BRACKET expr LEX_R_BRACKET LEX_PLUS
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{
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$$=regexp_createNODE(NODE_PLUS,'\0',$2,NULL);
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}
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| LEX_L_BRACKET expr LEX_R_BRACKET LEX_STAR
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{
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$$=regexp_createNODE(NODE_STAR,'\0',$2,NULL);
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}
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/* [] */
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| LEX_L_SQBRACKET exprdisnode LEX_R_SQBRACKET
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{
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$$=$2;
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}
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| LEX_L_SQBRACKET exprdisnode LEX_R_SQBRACKET LEX_QMARK
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{
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NODE* epsilon=regexp_createNODE(NODE_VAR,RE_EPSILON,NULL,NULL);
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$$=regexp_createNODE(NODE_OR,'\0',$2,epsilon);
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}
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| LEX_L_SQBRACKET exprdisnode LEX_R_SQBRACKET LEX_PLUS
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{
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$$=regexp_createNODE(NODE_PLUS,'\0',$2,NULL);
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}
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| LEX_L_SQBRACKET exprdisnode LEX_R_SQBRACKET LEX_STAR
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{
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$$=regexp_createNODE(NODE_STAR,'\0',$2,NULL);
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}
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;
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var : LEX_CHAR
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{
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#ifdef DEBUG_RE_PARSE
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printf("var : lecture %c\n",$1 + 'a' -1);
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#endif
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$$=regexp_createNODE(NODE_VAR,$1,NULL,NULL);
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}
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| LEX_ALL
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{
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$$=regexp_createNODE(NODE_VAR,RE_ALL_MATCH,NULL,NULL);
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}
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| LEX_VOWL
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{
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$$=regexp_createNODE(NODE_VAR,RE_VOWL_MATCH,NULL,NULL);
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}
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| LEX_CONS
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{
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$$=regexp_createNODE(NODE_VAR,RE_CONS_MATCH,NULL,NULL);
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}
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| LEX_USER1
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{
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$$=regexp_createNODE(NODE_VAR,RE_USR1_MATCH,NULL,NULL);
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}
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| LEX_USER2
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{
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$$=regexp_createNODE(NODE_VAR,RE_USR2_MATCH,NULL,NULL);
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}
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;
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exprdisnode : exprdis
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{
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int i,j;
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#ifdef DEBUG_RE_PARSE
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printf("exprdisnode : exprdis : ");
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#endif
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for(i=RE_LIST_USER_END + 1; i < DIC_SEARCH_REGE_LIST; i++)
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{
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if (list->valid[i] == 0)
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{
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list->valid[i] = 1;
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list->symbl[i] = RE_ALL_MATCH + i;
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list->letters[i][0] = 0;
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for(j=1; j < DIC_LETTERS; j++)
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list->letters[i][j] = $1[j] ? 1 : 0;
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#ifdef DEBUG_RE_PARSE
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printf("list %d symbl x%02x : ",i,list->symbl[i]);
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for(j=0; j < DIC_LETTERS; j++)
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if (list->letters[i][j])
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printf("%c",j+'a'-1);
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printf("\n");
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#endif
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break;
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}
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}
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$$=regexp_createNODE(NODE_VAR,list->symbl[i],NULL,NULL);
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}
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| LEX_HAT exprdis
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{
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int i,j;
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#ifdef DEBUG_RE_PARSE
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printf("exprdisnode : HAT exprdis : ");
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#endif
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for(i=RE_LIST_USER_END + 1; i < DIC_SEARCH_REGE_LIST; i++)
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{
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if (list->valid[i] == 0)
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{
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list->valid[i] = 1;
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list->symbl[i] = RE_ALL_MATCH + i;
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list->letters[i][0] = 0;
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for(j=1; j < DIC_LETTERS; j++)
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list->letters[i][j] = $2[j] ? 0 : 1;
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#ifdef DEBUG_RE_PARSE
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printf("list %d symbl x%02x : ",i,list->symbl[i]);
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for(j=0; j < DIC_LETTERS; j++)
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if (list->letters[i][j])
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printf("%c",j+'a'-1);
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printf("\n");
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#endif
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break;
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}
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}
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$$=regexp_createNODE(NODE_VAR,list->symbl[i],NULL,NULL);
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}
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;
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exprdis: vardis
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{
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memcpy($$,$1,sizeof(char)*DIC_LETTERS);
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}
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| vardis exprdis
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{
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int i;
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for(i=0; i < DIC_LETTERS; i++)
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$$[i] = $1[i] | $2[i];
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}
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;
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vardis: LEX_CHAR
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{
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int c = $1;
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memset($$,0,sizeof(char)*DIC_LETTERS);
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#ifdef DEBUG_RE_PARSE
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printf("vardis : lecture %c\n",c + 'a' -1);
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#endif
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$$[c] = 1;
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}
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;
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%%
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void regexperror(YYLTYPE *llocp, yyscan_t yyscanner, NODE** root,
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struct search_RegE_list_t *list,
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struct regexp_error_report_t *err, char const *msg)
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{
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err->pos1 = llocp->first_column;
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err->pos2 = llocp->last_column;
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strncpy(err->msg,msg,sizeof(err->msg));
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}
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/*
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* shut down the compiler
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*/
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static int yy_init_globals (yyscan_t yyscanner )
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{
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yy_init_globals(yyscanner);
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return 0;
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}
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